145601643 has 24 divisors (see below), whose sum is σ = 214332480. Its totient is φ = 87191520.

The previous prime is 145601633. The next prime is 145601647. The reversal of 145601643 is 346106541.

It is not a de Polignac number, because 145601643 - 2⁵ = 145601611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145601643.

It is not an unprimeable number, because it can be changed into a prime (145601647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 813328 + ... + 813506.

It is an arithmetic number, because the mean of its divisors is an integer number (8930520).

Almost surely, 2^145601643 is an apocalyptic number.

145601643 is a deficient number, since it is larger than the sum of its proper divisors (68730837).

145601643 is a wasteful number, since it uses less digits than its factorization.

145601643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 145601643 is about 12066.5505841562. The cubic root of 145601643 is about 526.0844016808.

The spelling of 145601643 in words is "one hundred forty-five million, six hundred one thousand, six hundred forty-three".